React Native之在Android上添加阴影的实现

btnView:{
        width:170,
        alignItems:'center',
        borderRadius:20,
        height:35,
        justifyContent:'center',
        backgroundColor: Color.CMHeaderBGColor,
        
        //以下是阴影属性：
        shadowOffset: {width: 0, height: 5},
        shadowOpacity: 0.5,
        shadowRadius: 5,
        shadowColor: Color.CMHeaderBgColor,
        //注意：这一句是可以让安卓拥有灰色阴影
        //elevation: 4,
        zIndex: Global.isIOS() ? 1 : 0
}

import React, {Component} from 'react'
import {
    StyleSheet,
    View,
    Text,
    ScrollView,
    Image,
    TouchableOpacity
} from 'react-native'
 
import {BoxShadow} from 'react-native-shadow'
 
export default class VideoCell extends Component {
    render = () => {
        const shadowOpt = {
            width:160,
            height:170,
            color:"#000",
            border:2,
            radius:3,
            opacity:0.2,
            x:0,
            y:3,
            style:{marginVertical:5}
        }
 
        return (
            <BoxShadow setting={shadowOpt}>
                <TouchableOpacity style={{
                    position:"relative",
                    width: 160,
                    height: 170,
                    backgroundColor: "#fff",
                    borderRadius:3,
                    // marginVertical:5,
                    overflow:"hidden"}}>
                    测试
                </TouchableOpacity>
            </BoxShadow>
        )
    }
}

<Image source={require('../../content/img/bank/shadowBg.png')}
   style={{width: deviceWidth-20, height: 220, alignItems: 'center',resizeMode:Image.resizeMode.contain}}> 
  <View style={styles.bankTop}></View>           
</Image>